Questions22 to 25 are based on the recording you have just heard.-|||-22.A)The relation between hair and skin. C)The color of human skin.-|||-B)The growing interest in skin studies. D)The need of skin protection.-|||-23.A) The necessity to save energy. C)The need to breathe with ease.-|||-B)Adaptation to the hot environment. D) Dramatic climate changes on earth.-|||-24.A)Leaves and grass. C)Their skin coloring.-|||-B) Man-madeshelter. D)Hair on their skin.-|||-25.A)Their genetic makeup began to change.-|||-B) Their communities began to grow steadily.-|||-C) Their children began to mix with each other.-|||-D)Their pace of evolution began to quicken.Questions 22 to 25 are based on the recording you have just heard. 22.A) The relation between hair and skin. C) The color of human skin. B)The growing interest in skin studies. D)The need of skin protection. 23. A) The necessity to save energy. C) The need to breathe with ease. B)Adaptation to the hot environment. D)Dramatic climate changes on earth. 24.A) Leaves and grass. C) Their skin coloring. B)Man-made shelter. D)Hair on their skin. 25. A) Their genetic makeup began to change. B) Their communities began to grow steadily. C) Their children began to mix with each other. D)Their pace of evolution began to quicken.

Questions 22 to 25 are based on the recording you have just heard. 22.A) The relation between hair and skin. C) The color of human skin. B)The growing interest in skin studies. D)The need of skin protection. 23. A) The necessity to save energy. C) The need to breathe with ease. B)Adaptation to the hot environment. D)Dramatic climate changes on earth. 24.A) Leaves and grass. C) Their skin coloring. B)Man-made shelter. D)Hair on their skin. 25. A) Their genetic makeup began to change. B) Their communities began to grow steadily. C) Their children began to mix with each other. D)Their pace of evolution began to quicken.